import socket

s=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
s.connect(('www.sina.com.cn',80))
s.send(b'GET / HTTP/1.1\r\nHost: www.sina.com.cn\r\nConnection: close\r\n\r\n')
buffer=[]
while True:
	d=s.recv(1024)
	if d:
		buffer.append(d)
	else:
		break
data=b''.join(buffer)
print('data---%s'%data)
s.close()
header,html=data.split(b'\r\n\r\n',1)
print('头为：%s'header.decode('utf-8'))
with open('sina.html','wb')as f:
	f.write(html)